State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 116023, Dalian, China.
University of Chinese Academy of Sciences, 100049, Beijing, China.
Nat Commun. 2022 Jan 11;13(1):258. doi: 10.1038/s41467-021-27919-9.
Natural gas is one of the foremost basic energy sources on earth. Although biological process appears as promising valorization routes to transfer biomass to sustainable methane, the recalcitrance of lignocellulosic biomass is the major limitation for the production of mixing gas to meet the natural gas composition of pipeline transportation. Here we develop a catalytic-drive approach to directly transfer solid biomass to bio-natural gas which can be suitable for the current infrastructure. A catalyst with NiAl alloy phase enables nearly complete conversion of various agricultural and forestry residues, the total carbon yield of gas products reaches up to 93% after several hours at relative low-temperature (300 degrees Celsius). And the catalyst shows powerful processing capability for the production of natural gas during thirty cycles. A low-carbon footprint is estimated by a preliminary life cycle assessment, especially for the low hydrogen pressure and non-fossil hydrogen, and technical economic analysis predicts that this process is an economically competitive production process.
天然气是地球上最重要的基础能源之一。虽然生物过程似乎是将生物质转化为可持续甲烷的有前途的增值途径，但木质纤维素生物质的顽固性是生产混合气体以满足管道输送天然气组成的主要限制。在这里，我们开发了一种催化驱动方法，可将固体生物质直接转化为生物天然气，从而适应当前的基础设施。具有 NiAl 合金相的催化剂可使各种农林废弃物几乎完全转化，在相对较低的温度（300 摄氏度）下经过数小时后，气体产物的总碳收率可达到 93％。并且该催化剂在三十个循环中显示出了强大的天然气生产能力。通过初步的生命周期评估估计了低碳足迹，特别是对于低氢压力和非化石氢，技术经济分析预测该过程是一种具有经济竞争力的生产过程。
